Socket Connect Bungs | McMaster-Carr

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	Pipe Size Pipe Size

1/8

	Material Material

Steel

Stainless Steel

Plastic

	Connection Style Connection Style	Show

Socket Connect

	Connection Style Connection Style	Hide

	Type Type


Adapter	Connector

	Mount Type Mount Type

	Through Wall

	For Tank Surface For Tank Surface

Flat

Curved

	For Use With For Use With

	For Pipe Material For Pipe Material

Stainless Steel

Steel

Plastic

	Shape Shape

	Straight

	For Pipe Schedule For Pipe Schedule

	80

	System of Measurement System of Measurement

Inch

	For Hole Diameter For Hole Diameter

	Thread Type Thread Type

NPT

	Length Length

	Socket Connect Type Socket Connect Type


Cement	Weld

	Connection Type Connection Type

	Pipe

	Gender Gender

Female

	Maximum Pressure Maximum Pressure

150 psi @ 72° F

2,500 psi @ 72° F

3,000 psi @ 72° F

	Color Color

	Dark Gray
	Light Gray

	Tank Connection Type Tank Connection Type

Threaded

	Gasket Material Gasket Material

EPDM Rubber

Neoprene Rubber

	Specifications Met Specifications Met

ASME

ASTM

NSF/ANSI

	For Maximum Wall Thickness For Maximum Wall Thickness

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76 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

High-Pressure Socket-Connect Steel Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection. Fittings have heavy duty construction that stands up to high-pressure applications. They are for use in noncorrosive environments.

Socket connect x butt weld straight adapters are also known as half couplings.

For technical drawings and 3-D models, click on a part number.

Straight Adapters

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: 3000
Specifications Met: ASTM A105, ASME B16.11
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 and 600 steel

Socket Connect Female × Butt Weld
Pipe Size	Wall Thick.	Construction	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	0.255"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
1/4	0.335"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	0000
3/8	0.301"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	0000
1/2	0.33"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	0000
3/4	0.355"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	0000
1	0.396"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	0000
1 1/4	0.45"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	0000
1 1/2	0.46"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	0000
2	0.48"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	00000
2 1/2	0.608"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	000000
3	0.651"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	000000
4	0.765"	Seamless	3,000 psi @ 72° F	Not Rated	Steel	000000000	000000

High-Pressure Socket-Connect Stainless Steel Unthreaded Pipe Fittings

Forged for excellent strength, these heavy duty socket-connect fittings stand up to high-pressure applications. They are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

Socket connect x butt weld straight adapters are also known as half couplings.

Straight Adapters

For Use With: Air, Water, Hydraulic Fluid, Natural Gas, Steam, Oil
Class: 3000
Specifications Met: ASTM A182, ASME B16.11
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

			304/304L Stainless Steel			316/316L Stainless Steel
Pipe Size	Dash Size	Max. Steam Pressure	Max. Pressure		Each	Max. Pressure		Each
Socket Connect × Butt Weld
1/8	02	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000	3,000 psi @ 72° F	000000000	000000
1/4	04	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	0000	3,000 psi @ 72° F	000000000	00000
3/8	06	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	0000	3,000 psi @ 72° F	000000000	00000
1/2	08	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000	3,000 psi @ 72° F	000000000	00000
3/4	12	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000	3,000 psi @ 72° F	000000000	00000
1	16	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000	3,000 psi @ 72° F	000000000	00000
1 1/2	24	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000	3,000 psi @ 72° F	000000000	00000
2	32	1,900 psi @ 350° F	2,500 psi @ 72° F	000000000	00000	3,000 psi @ 72° F	000000000	000000

Thick-Wall Plastic Pipe Fittings for Water

Connect these fittings to Schedule 80 pipe–they have thicker, stronger walls than standard-wall fittings so they can handle heavy duty industrial plumbing and water supply applications, such as water processing, waste water treatment, and irrigation. Fittings are plastic for good corrosion resistance. They meet ASTM D1784 specifications and testing requirements for material quality.

Fittings for drinking water meet NSF/ANSI Standard 61.

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).

To prevent leaks in threaded connections, apply a sealant to the male threads. For plastic threads, apply a non-hardening, plastic-compatible sealant. Tape or sealants with PTFE are not recommended for plastic-to-plastic connections.

Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.

Warning: Never use plastic pipe fittings and pipe with compressed air or gas.

For technical drawings and 3-D models, click on a part number.

Through‐Wall Straight Connectors, Female Socket Connect

For Use With: Drinking Water, Water
Maximum Temperature: 140° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 PVC Plastic
Flanges: Use Class 150 PVC Plastic

Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots.

Pipe Size	Socket Depth	For Hole Dia.	For Max. Wall Thick.	Material	Gasket Material	Color	Max. Pressure		Each
1/2	29/32"	1 3/8"	2 5/64"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	000000
3/4	1 1/64"	1 5/8"	2 5/64"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
1	1 9/64"	1 7/8"	2 5/64"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
1 1/4	1 17/64"	2 21/32"	2"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
1 1/2	1 25/64"	2 21/32"	2"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
2	1 33/64"	3 1/4"	2"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
3	1 57/64"	4 1/2"	2 1/8"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
4	2 17/64"	5 3/4"	2 29/64"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	000000
6	3 1/32"	8 1/16"	3 1/4"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	000000

Through‐Wall Straight Adapters, Female Socket Connect × Female Threaded Pipe

For Use With: Drinking Water, Water
Maximum Temperature: 140° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 PVC Plastic
Flanges: Use Class 150 PVC Plastic

Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots.

NPT Threads
Pipe Size	Socket Depth	For Hole Dia.	For Max. Wall Thick.	Material	Gasket Material	Color	Max. Pressure		Each
1/4	5/8"	1 1/16"	1/2"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	00000000	000000
3/8	3/4"	1 3/16"	1/2"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	00000000	00000
1/2	29/32"	1 3/8"	2 1/16"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
1/2	1 7/8"	1 1/2"	3/4"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	00000
3/4	1"	1 3/4"	3/4"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	00000
3/4	1 1/64"	1 5/8"	2 1/16"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
1	1 1/8"	2"	13/16"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	00000
1	1 9/64"	1 7/8"	2 1/16"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
1 1/4	1 1/4"	2 3/8"	13/16"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	00000
1 1/4	1 17/64"	2 5/8"	2"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
1 1/2	1 3/8"	2 3/4"	13/16"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	00000
1 1/2	1 25/64"	2 5/8"	2"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
2	1 1/2"	3 3/8"	1 3/16"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	00000
2	1 33/64"	3 1/4"	2"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
3	1 7/8"	4 5/8"	2"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	000000
3	1 57/64"	4 1/2"	2 1/8"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	00000
4	2 1/4"	5 1/2"	1 1/4"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	000000
4	2 17/64"	5 3/4"	2 7/16"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	000000
6	3"	8"	2 1/16"	PVC Plastic	Neoprene Rubber	Dark Gray	150 psi @ 72° F	0000000	000000
6	3 1/32"	8 1/16"	3 1/4"	PVC Plastic	EPDM Rubber	Dark Gray	150 psi @ 72° F	000000000	000000

CPVC Pipe Fittings for Hot Water

Made of CPVC, these fittings can handle high temperatures up to 200° F. They have thick, strong walls to handle heavy duty industrial plumbing and water supply applications, such as water processing and waste water treatment. They also have good corrosion resistance. These fittings are comparable to Corzan. Some meet ASTM D1784 specifications and testing requirements for material quality.

Fittings for drinking water meet NSF/ANSI Standard 61.

Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.

Warning: Never use plastic pipe fittings and pipe with compressed air or gas.

Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local regulatory limits on VOCs (Volatile Organic Compounds).

For technical drawings and 3-D models, click on a part number.

Through‐Wall Straight Adapters, Female Socket Connect × Female Threaded Pipe

For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid (25%), Phosphoric Acid, Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water
Fittings with Neoprene Rubber Gaskets: Drinking Water, Water
Maximum Temperature: 180° F
Fittings with Neoprene Rubber Gasket: 200° F
Specifications Met: ASTM D1784
Fittings with Neoprene Rubber Gaskets: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
Flanges: Use Class 150 CPVC Plastic

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).

To prevent leaks in threaded connections, apply a non-hardening, plastic-compatible sealant to the male threads. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.

Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots.

NPT Threads
Pipe Size	Socket Depth	For Hole Dia.	For Max. Wall Thick.	Material	Gasket Material	Color	Max. Pressure		Each
1/4	5/8"	1 1/16"	1/2"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	00000000	000000
3/8	3/4"	1 3/16"	1/2"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	00000000	00000
1/2	7/8"	1 1/2"	3/4"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	0000000	00000
1/2	29/32"	1 3/8"	2 1/16"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	00000
3/4	1"	1 3/4"	3/4"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	0000000	00000
3/4	1 1/64"	1 5/8"	2 1/16"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	00000
1	1 1/8"	2"	13/16"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	0000000	00000
1	1 9/64"	1 7/8"	2 1/16"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	00000
1 1/4	1 17/64"	2 5/8"	2"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	00000
1 1/2	1 17/64"	2 5/8"	2"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	00000
1 1/2	1 3/8"	2 3/4"	13/16"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	0000000	00000
2	1 25/64"	3 1/4"	2"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	00000
2	1 1/2"	3 3/8"	1 3/16"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	0000000	000000
3	1 57/64"	4 1/2"	2 1/8"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	00000
4	2 1/4"	5 1/2"	1 1/4"	CPVC Plastic	Neoprene Rubber	Light Gray	150 psi @ 72° F	00000000	000000
4	2 17/64"	5 3/4"	2 7/16"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	000000
6	3 1/32"	8 1/16"	3 1/4"	CPVC Plastic	EPDM Rubber	Light Gray	150 psi @ 72° F	000000000	000000

Pipe Cement for Max. Pipe Size 6	00000000	Each	00000
Non-Hardening Thread Sealant	000000	Each	00000